#1
Radon Xpress
Naperville, IL
Google rating: 5.0 (47 reviews)
Reviews: 47
Certifications: 0
Services
MitigationTesting
Best Radon Contractors in Naperville, Illinois (2026)
Ranked using real Google ratings, review counts, and certification data only.
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#2
Radon Reduction Systems Inc
Naperville, IL
Google rating: 5.0 (8 reviews)
Reviews: 8
Certifications: 0
Services
MitigationTestingCommercial
#3
RKC Radon Testing
Naperville, IL
Google rating: 4.8 (12 reviews)
Reviews: 12
Certifications: 0
Services
TestingCommercial
How We Rank
- Google rating: higher average ratings rank higher.
- Review count: more reviews break ties between similar ratings.
- Certification count: more certifications break ties after rating and review metrics.
- Verified data only: rankings are based on stored profile data, not manual edits or paid placement.
FAQ
Who is the best radon contractor in Naperville?
Radon Xpress is currently ranked #1 in Naperville based on Google rating, review volume, and certification count from our verified data sources.
How many radon contractors are in Naperville?
We currently list 3 radon contractors in Naperville, Illinois.
What should I look for?
Focus on strong ratings with meaningful review volume, current professional certifications, and clear service coverage for your home type.